Higgins (ankle) was a limited participant at Thursday's practice, Geoff Hobson of the Bengals' official site reports.
The Bengals haven't yet sounded the alarm about the possibility of Higgins sitting out Sunday's game against the Ravens, but the wideout has had his reps capped for two straight days while he manages the ankle injury. He may need to take part in Friday's practice as a full participant to avoid taking an injury designation into the weekend.